Going back to Ronald Reagan, the Rev. Wilfredo De Jes√ļs‚ÄĒthe senior pastor of a 4,500-member Hispanic evangelical church in Chicago‚ÄĒhas pulled the lever for Republicans in presidential elections. "I always voted on the issue of abortion and the sanctity of marriage," he says. This time, though, Sen. Barack Obama's message of faith and social justice, combined with strident GOP rhetoric on illegal immigration, has persuaded him to endorse the Democrat. That switch illustrates the extent to which the Latino evangelical vote is in play‚ÄĒa development that could prove decisive on Nov. 4. Though polls show Obama beating Sen. John McCain among Hispanics as a whole by roughly 30 points, Hispanic evangelicals are a tougher sell. In 2004, 63 percent of them voted for President Bush....